21022101111200 has 72 divisors (see below), whose sum is σ = 58651662115872. Its totient is φ = 7207577521920.

The previous prime is 21022101111191. The next prime is 21022101111211. The reversal of 21022101111200 is 211110122012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1876967714 + ... + 1876978913.

It is an arithmetic number, because the mean of its divisors is an integer number (814606418276).

Almost surely, 2^{21022101111200} is an apocalyptic number.

21022101111200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21022101111200 is an abundant number, since it is smaller than the sum of its proper divisors (37629561004672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21022101111200 is a wasteful number, since it uses less digits than its factorization.

21022101111200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3753946654 (or 3753946641 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21022101111200 its reverse (211110122012), we get a palindrome (21233211233212).

The spelling of 21022101111200 in words is "twenty-one trillion, twenty-two billion, one hundred one million, one hundred eleven thousand, two hundred".